PJM Website

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The PJM Interconnection operates a competitive wholesale electricity market and manages the reliability of its transmission grid. PJM provides open access to the transmission and performs long-term planning. In managing the grid, PJM centrally dispatches generation and coordinates the movement of wholesale electricity in all or part of 13 states (Delaware, Illinois, Indiana, Kentucky, Maryland, Michigan, New Jersey, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia and West Virginia) and the District of Columbia. PJM’s markets include energy (day-ahead and real-time), capacity and ancillary services.

PJM was founded in 1927 as a power pool of three utilities serving customers in Pennsylvania and New Jersey. In 1956, with the addition of two Maryland utilities, it became the Pennsylvania-New Jersey-Maryland Interconnection, or PJM. PJM became a fully functioning ISO in 1996 and, in 1997, it introduced markets with bid-based pricing and locational market pricing (LMP). PJM was designated an RTO in 2001.

List of Orders

Click on the categories below to view additional information.

Docket No. Date Issued Company Title
ER24-2045-004 April 16, 2026 PJM Interconnection, L.L.C. ORDER ACCEPTING COMPLIANCE IN PART AND DIRECTING FURTHER COMPLIANCE
ER26-1088-000 April 16, 2026 PJM Interconnection, L.L.C. ORDER ACCEPTING COMPLIANCE IN PART AND DIRECTING FURTHER COMPLIANCE
EL26-7-000 March 19, 2026 PJM Interconnection, L.L.C.

The order denies RWE Clean Energy, LLC’s (RWE) complaint alleging that PJM Interconnection, L.L.C. violated its Open Access Transmission Tariff when it allocated costs for certain Network Upgrades to RWE’s new service requests for its Maryland Blue Crab Solar and Storage, LLC project in the Phase III System Impact Study.

Docket No. Date Issued Company Title
EL25-49-000 December 18, 2025 PJM Order on Show Cause Proceeding, Directing Compliance Filing, Establishing Paper Hearing, and Granting In Part and Denying In Part Complaint

ER24-98-002

September 18, 2025

PJM Interconnection, L.L.C.

Order Addressing Arguments Raised on Rehearing and Setting Aside Prior Order, In Part
ER24-2045-000 July 24, 2025 PJM Interconnection Order on Compliance
ER25-785-002 June 26, 2025 PJM Interconnection Order Addressing Arguments Raised on Rehearing
ER25-612-000 April 17, 2025 PJM Interconnection Order Dismissing Waiver Request
ER24-2397-001 March 20, 2025 Southwest Power Pool, Inc. Order Addressing Arguments Raised on Rehearing
EL25-49-000 February 20, 2025 PJM Interconnection Order Instituting Proceeding Under Section 206 Of The Federal Power Act and Consolidating With Other Proceedings
Docket No. Date Issued Company Title
EL24-18-000 December 19, 2024 PJM Interconnection LLC Order denying complaint
ER24-2401-001 December 19, 2024 PJM Interconnection LLC Order addressing arguments raised on rehearing
EL24-104-001 December 19, 2024 PJM Interconnection LLC Order addressing arguments raised on rehearing
ER24-1583-001 November 21, 2024 Southwest Power Pool, Inc. Order Addressing Arguments Raised on Rehearing
ER24-2520-000 November 21, 2024 Southwest Power Pool, Inc Order Rejecting Tariff Revisions
ER24-99-003 October 17, 2024 PJM Interconnection LLC Order Addressing Arguments Raised on Rehearing, Setting Aside Prior Order, in Part, and Granting Motion to Lodge
EL23-104-000 September 19, 2024 PJM Interconnection LLC Order Denying Complaint

ER24-156-000

July 25, 2024 PJM Interconnection LLC  Order on Compliance Filing

ER22-962-005

July 25, 2024 PJM Interconnection LLC 

Order on Compliance Filing

ER23-1067-002  June 27, 2024 PJM Interconnection LLC  Order Addressing Arguments Raised on Rehearing 
ER17-1433-005 June 27, 2024 PJM Interconnection LLC  Order on Remand 
EL24-64-000 May 23, 2024 PJM Interconnection LLC Order Denying Complaint
Docket No. Date Issued Company Title
ER22-2931-000 December 20, 2023 PJM Interconnection LLC Order on Unexecuted Interconnection Service Agreements

EL23-53-003

December 19, 2023

Essential Power OPP, LLC, et al. v. PJM Interconnection, L.L.C.

Order Approving Uncontested Settlement

ER23-2975-000

December 19, 2023 PJM Interconnection LLC Order Approving Uncontested Settlement
EL23-63-000 December 19, 2023

Energy Harbor LLC v. PJM Interconnection, L.L.C.

Order Denying Complaint

ER24-163-000 December 19, 2023 PJM Interconnection LLC Order on Abandoned Plant Incentive
ER23-2327-000 September 21, 2023 PJM Interconnection, L.L.C. Order Addressing Arguments Raised on Rehearing
EL22-32-000 September 21, 2023 PJM Interconnection, L.L.C. Order Accepting, In Part, Proposed Tariff Revisions, Requiring Tariff Revisions Pursuant To Section 206, And Addressing Arguments Raised On Rehearing
EL22-65-000 September 21, 2023 Southwest Power Pool Inc. Order on Show Cause Proceeding
ER23-729-001 July 27, 2023 PJM Interconnection, L.L.C. Order Addressing Arguments Raised on Rehearing
ES23-23-000 March 16, 2023 PJM Interconnection, L.L.C. Order Modifying Authorization to Issue Securities
Docket No. Date Issued Company Title
EL19-58-007 July 28, 2022 PJM Interconnection, L.L.C. Order Addressing Arguments Raised on Rehearing and Dismissing Request for Clarification
EL22-26-000 February 17, 2022 PJM Interconnection, L.L.C. Order Finding Operating Agreement Unjust and Unreasonable and Establishing Replacement Rate
ER21-1802-000 February 17, 2022 PJM Interconnection, L.L.C.  Order Accepting Tariff Revisions
EL19-47-000  January 20, 2022 Independent Market Monitor for PJM v. PJM Interconnection, L.L.C. 
 
Order Dismissing Motion for Clarification and Waiver 
ER19-105-005  January 20, 2022 PJM Interconnection, L.L.C. Order to reconsider the Commission’s Prior Orders
ER20-1832-001 January 20, 2022 PJM Interconnection, L.L.C.  Proposed Revisions To Its Formula Rate
Docket No. Date Issued Company Title
ER21-2965-000 December 16, 2021 PJM Interconnection, L.L.C., Atlantic City Electric Company, Delmarva Power & Light Company, and PECO Energy Company Order on Formula Rate Tariff Revisions and Establishing Hearing and Settlement Judge Procedures
ER21-1635-002 December 16, 2021 PJM Interconnection, L.L.C. Letter Order Accepting Proposed Tariff Records
ER20-1739-000 November 18, 2021 American Transmission Systems, Inc., PJM Interconnection, L.L.C. Order on Compliance and Establishing Hearing and Settlement Judge Procedures.
EL21-62-001  September 23, 2021 Jackson Generation, LLC v. PJM Interconnection, L.L.C. Rehearing  Order Addressing Argments Raised On Rehearing
EL21-78-000 June 17, 2021 PJM Interconnection, L.L.C. Advisory 1 of 1 Order to Show Cause
ER17-1433-001 May 20, 2021 PJM Interconnection, L.L.C. Order Rejecting Compliance Filing, Directing Further Compliance, and Dismissing Complaint
ER19-2722-003 May 20, 2021 PJM Interconnection, L.L.C. Order Accepting Compliance Filing
ER20-1150-001 April 15, 2021 PJM Interconnection, L.L.C., The Dayton Power & Light Company Letter Order Approving Uncontested Settlement
ER20-227-001 April 15, 2021 PJM Interconnection, L.L.C. and Jersey Central Power & Light Co. Letter order approving settlement
EL19-47-000 March 18, 2021 Independent Market Monitor for PJM 
v. 
PJM Interconnection, L.L.C.
Order Granting Complaints and Ordering Additional Briefing
ER20-2686-000 02/18/21 PJM Interconnection, L.L.C. Order Accepting Compliance Filing
EL20-30-001 01/19/21 Indiana Municipal Power Agency, and City of Lawrenceburg, Indiana
v.
PJM Interconnection, L.L.C., American Electric Power Service Corp., and Lawrenceburg Power, LLC.
Order Addressing Arguments Raised on Rehearing

This page was last updated on April 16, 2026